Improve handling of file paths for absolute paths internally

[soaressgabriel]

Checklist

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Added tests for changed code.
• Updated documentation for changed code.

Description

• The changes involve modifying the code to use os.path.abspath() alongside os.path.join() to construct paths within the application, ensuring consistency and compatibility across different platforms.

Related Issue

• Resolve Improve handling of file paths for absolute paths internally #186.

Motivation and context

• This change is necessary to enhance the robustness and portability of the application by preventing path-related errors, especially when executed on different operating systems;
• See Improve handling of file paths for absolute paths internally #186.

How has this been tested

• Testing was conducted by running the application on multiple platforms, including Windows, and Linux, to ensure consistent behavior.

Screenshots

• N/A